A. 正常 B. 关注 C. 次级 D. 可疑
A. F(2,30),0.05 B. F(2,28),0.05 C. F(2,31),0.05 D. F(2,28),0.025 E. F(2,28),0.10
A. 层递 B. 对偶 C. 双关 D. 反语